作者:本站原创 发布日期:2015-01-29
MOSI2 heating element is a kind of resistance heating element basically made of high pure Molybdenum Disilicide. In oxidizing atmosphere, a layer of compact quartz protective film is formed on the surface of MOSI2 heating element owing to the high-temperature combustion, which prevent MOSI2 from continuously oxidizing. In oxidizing atmosphere, its max temperature can reach 1800℃. It can be widely used in such applications as sintering and heat treatment of ceramics, magnet, glass, metallurgy, refractory, etc.
1.Physical properties
Volume density |
Bend strength |
Vickers-hardness |
Porosity rate |
Water absortion |
Hot extensibility |
5.5g/cm³ |
15~25kg/cm² |
(HV)570kg/mm² |
7.4% |
1.2% |
4% |
2.Chemical properties
In oxidizing atmosphere, a layer of compact quartz protective film is formed on the surface of MOSI2 heating element owing to the high-temperature combustion, which prevent MOSI2 from continuously oxidizing. When the element temperature is higher than 1700℃,the SIO2 protective film will be fused. In oxidizing atmosphere, when the element is continuously used, the protective film forms again. The element cannot be used for long time in 400-700℃, otherwise it will be powdered owing to the strong oxidizing action in low temperature.
3.The max temperature of elements in different atmosphere
Atmosphere |
Max element temperature |
|
1700 |
1800 |
|
NO2,CO2,O2,Air |
1700℃ |
1800℃ |
He,Ar,Ne |
1650℃ |
1750℃ |
SO2 |
1600℃ |
1750℃ |
CO,N2 |
1500℃ |
1600℃ |
Wet H2 |
1400℃ |
1500℃ |
Dry H2 |
1350℃ |
1450℃ |
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